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POST UTME EKSU 2024 Physics | Objective

Are you preparing for POST UTME EKSU exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 Physics (Objective) questions designed to simulate the real exam environment.

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Question 1

A parallel plate capacitor with plates of area 0.04 m^2 and separation 0.02 m is charged to a potential difference of 12 V. If the dielectric cons\tant of the material between the plates is 3, calculate the capaci\tance of the capacitor.

Correct A. 0.02 F

B. 0.04 F

C. 0.06 F

D. 0.08 F

Correct Answer: A

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Question 2

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, calculate the time taken by the particle to complete one revolution.

A. 2 s

Correct B. 4 s

C. 6 s

D. 8 s

Correct Answer: B

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Question 3

A ray of light passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.

Correct A. 20°

B. 30°

C. 40°

D. 50°

Correct Answer: A

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Question 4

A current of 2 A flows through a resistor of resis\tance 4 Ω. If the voltage across the resistor is 12 V, calculate the power consumed by the resistor.

A. 24 W

Correct B. 48 W

C. 72 W

D. 96 W

Correct Answer: B

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Question 5

A gas occupies a volume of 2 L at a pressure of 1 atm. If the temperature is increased to 300 K, calculate the new volume of the gas.

A. 4 L

Correct B. 6 L

C. 8 L

D. 10 L

Correct Answer: B

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Question 6

A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, determine the angular frequency of the resulting simple harmonic motion.

A. 10 rad/s

Correct B. 20 rad/s

C. 30 rad/s

D. 40 rad/s

Correct Answer: B

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Question 7

A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 100 V. If the dis\tance between the plates is doubled, what is the new capaci\tance?

A. 5 μF

B. 10 μF

Correct C. 20 μF

D. 40 μF

Correct Answer: C

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Question 8

A ray of light passes from air into a glass block with a re\fractive index of 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?

Correct A. 20°

B. 30°

C. 40°

D. 50°

Correct Answer: A

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Question 9

A magnetic field of 0.5 T is directed perp\endicular to a wire carrying a current of 2 A. If the length of the wire is 1 m, what is the force on the wire?

A. 0.5 N

B. 1 N

Correct C. 2 N

D. 5 N

Correct Answer: C

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Question 10

A lens with a focal length of 20 cm is used to form an image of an object 30 cm away. What is the magnification of the image?

A. -0.5

B. -1

Correct C. -2

D. -3

Correct Answer: C

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Question 11

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the force?

A. 10 N

Correct B. 12 N

C. 15 N

D. 20 N

Correct Answer: B

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Question 12

A 100 W light bulb is connected to a 220 V AC power source. If the bulb is rated for 0.5 A, what is the power factor of the circuit?

A. 0.5

Correct B. 0.7

C. 0.9

D. 1.0

Correct Answer: B

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Question 13

A wave of frequency 50 Hz and amplitude 2 m is traveling through a medium with a speed of 150 m/s. If the wave is reflected from a fixed \end, what is the maximum acceleration of the wave?

A. 100 m/s^2

B. 150 m/s^2

Correct C. 200 m/s^2

D. 250 m/s^2

Correct Answer: C

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Question 14

A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If the air resis\tance is negligible, what is the maximum height reached by the projectile?

A. 10 m

B. 15 m

Correct C. 20 m

D. 25 m

Correct Answer: C

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Question 15

A 1000 kg car is traveling at a speed of 50 m/s. If the car is brought to rest in 10 s, what is the average force applied to the car?

A. 500 N

B. 1000 N

Correct C. 1500 N

D. 2000 N

Correct Answer: C

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Question 16

A radioactive sample of Uranium-238 undergoes \alpha decay, emitting an \alpha particle. If the mass number of the parent nucleus is 238 and the atomic number is 92, what is the mass number of the daughter nucleus?

Correct A. 234

B. 236

C. 238

D. 240

Correct Answer: A

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Question 17

A 2.0 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.20 m from its equilibrium position and released from rest. What is the speed of the block when it passes through the equilibrium position?

A. 0.50 m/s

Correct B. 1.0 m/s

C. 1.5 m/s

D. 2.0 m/s

Correct Answer: B

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Question 18

A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current in the circuit?

A. 1.5 A

Correct B. 2.0 A

C. 2.5 A

D. 3.0 A

Correct Answer: B

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Question 19

A 100 μF capacitor is connected in parallel with a 220 Ω resistor. A 12 V battery is connected across the circuit. What is the current in the circuit?

A. 0.50 A

Correct B. 1.0 A

C. 1.5 A

D. 2.0 A

Correct Answer: B

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Question 20

A 10 μF capacitor is connected in series with a 220 Ω resistor. A 12 V battery is connected across the circuit. What is the current in the circuit?

A. 0.50 A

Correct B. 1.0 A

C. 1.5 A

D. 2.0 A

Correct Answer: B

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Question 21

A gas is enclosed in a container at a temperature of 300 K. If the volume of the gas is doubled, what is the new pressure, given that the initial pressure is 1.5 atm?

A. 0.75 atm

B. 1.5 atm

Correct C. 3 atm

D. 4.5 atm

Correct Answer: C

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Question 22

A nucleus has a mass number of 240 and an atomic number of 94. What is the number of protons and neutrons in the nucleus?

Correct A. 94 protons, 146 neutrons

B. 94 protons, 146 neutrons

C. 94 protons, 146 neutrons

D. 94 protons, 146 neutrons

Correct Answer: A

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Question 23

A 10 kg block of ice at 0°C is placed in a 50°C water bath. Assuming no heat loss to the surroundings, what is the final temperature of the ice block?

A. 10°C

B. 20°C

C. 30°C

Correct D. 40°C

Correct Answer: D

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Question 24

A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle has a speed of 4 m/s, what is the centripetal force acting on the particle?

A. 10 N

B. 20 N

Correct C. 30 N

D. 40 N

Correct Answer: C

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Question 25

A 100 W light bulb is connected to a 220 V power source. What is the current flowing through the bulb?

A. 0.5 A

Correct B. 1 A

C. 2 A

D. 3 A

Correct Answer: B

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